Bird feeder



FIG. 1 is a perspective view of a bird feeder showing my new design;

FIG. 2 is a front elevational view thereof the rear being identical to the front view shown;

FIG. 3 is a side elevational view thereof, the opposite side being identical to the side shown;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a bird feeder, as shown and described. 